Scroll compressor

A scroll compressor, comprising:

• a casing in which a predetermined amount of oil is stored;
• a rotational shaft disposed in an inner space of the casing and having an oil passage to guide the oil in the casing;
• an orbiting scroll coupled to the rotational shaft to perform an orbiting motion;
• a fixed scroll coupled to the orbiting scroll to form a compression chamber;
• a main frame disposed on an opposite side of the fixed scroll with the orbiting scroll interposed therebetween, fixed in the inner space of the casing, and forming an intermediate pressure chamber together with the orbiting scroll and the fixed scroll;
• an intermediate pressure passage that communicates with the intermediate pressure chamber;
• and
• an oil supply passage that guides a portion of the oil suctioned through the oil passage of the rotational shaft to the compression chamber, wherein the oil supply passage is separated from the intermediate pressure chamber and allows the oil passage to communicate with the compression chamber, wherein the oil supply passage comprises:
• a first oil supply oil passage disposed in the orbiting scroll and having a first end that communicates with the oil passage of the rotational shaft;
• and
• a second oil supply passage disposed in the fixed scroll and having a first end that communicates with the first oil supply passage and a second end that communicates with the compression chamber, and wherein a second end of the first oil supply passage passes through a first thrust surface of the orbiting scroll facing the fixed scroll, and the first end of the second oil supply passage passes through a second thrust surface of the fixed scroll facing the orbiting scroll.